Integrating Analysis Tools into the Design Process through Constrained Parametric Structures. - Rolf Fischer; Ana Sofia Vieira (Geometric Modelling, 1993)

Representation Scheme for Feature-based Parametric Design. - Ana Sofia Vieira; Gino Brunetti (CAD Systems Development, 1995)

Intuitive Semantically Constrained Interaction in Feature-Based Parametric Design. - André Stork; Gino Brunetti; Ana Sofia Vieira (CAD, 1996)